CVE-2021-3055 MEDIUM

CVE-2021-3055: PAN-OS: XML External Entity (XXE) Reference Vulnerability in the PAN-OS Web Interface

Vendor Palo Alto Networks
Product PAN-OS
Weakness CWE-611 · XXE
Published September 8, 2021
Last update September 17, 2024
View on NVD All CVEs

CVSS base score

6.5/10
Attack vector Network
Attack complexity Low
Privileges required High
User interaction None
Confidentiality High
Integrity None

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:H

What the vulnerability does

01Description

An improper restriction of XML external entity (XXE) reference vulnerability in the Palo Alto Networks PAN-OS web interface enables an authenticated administrator to read any arbitrary file from the file system and send a specifically crafted request to the firewall that causes the service to crash. Repeated attempts to send this request result in denial of service to all PAN-OS services by restarting the device and putting it into maintenance mode. This issue impacts: PAN-OS 8.1 versions earlier than PAN-OS 8.1.20; PAN-OS 9.0 versions earlier than PAN-OS 9.0.14; PAN-OS 9.1 versions earlier than PAN-OS 9.1.10; PAN-OS 10.0 versions earlier than PAN-OS 10.0.6. This issue does not affect Prisma Access.

Key dates

02Disclosure timeline

September 8, 2021 CVE published
September 17, 2024 Record updated